docs: def handleNotification(self, handle, raw_data):  # pylint: disable=unused-argument,invalid-name
          """ gets called by the bluepy backend when using wait_for_notification
          """
          if raw_data is None:
              return
          data = raw_data.decode("utf-8").strip(' \n\t')
          self._cache = data
          self._check_data()
          if self.cache_available():
              self._last_read = datetime.now()
          else:
              # If a sensor doesn't work, wait 5 minutes before retrying
              self._last_read = datetime.now() - self._cache_timeout + \
                  timedelta(seconds=300)